Covered Calls on Low Cost Basis Stock: Tax Strategy 2026

Tax strategy for covered calls on low cost basis stock in 2026

Covered calls on low cost basis stock require a different analysis than standard income-oriented covered calls. When the stock has a 500 to 1,000 percent embedded gain, the dominant question is not how much premium you can collect but how much tax you will accelerate by allowing assignment. Every covered call on a low-basis position is implicitly a decision about when to recognize a deferred capital gain, and the premium must be large enough to justify that acceleration.

The standard covered call metrics -- annualized yield, breakeven, static return -- can be misleading on low-basis stock because they do not include the tax cost of assignment. An investor who writes a US$165 call for US$2.80 on stock with a US$15 basis sees a 1.9 percent monthly yield. But if 200 shares are assigned, the US$30,000 capital gain at a 15 percent rate plus 3.8 percent NIIT produces roughly US$5,640 in federal tax. The US$560 of premium (US$2.80 times 200 shares) is dwarfed by the tax event.

Partial overwriting to control the tax event

Partial overwriting means writing calls on a fraction of the position rather than the full holding. If you own 1,000 shares, writing calls on 200 shares limits the maximum annual assignment to 200 shares and keeps the capital gain within a planned bracket. This approach pairs naturally with the de-concentration strategy described in the concentrated-stock guide.

The annual tax planning question is: how much additional long-term capital gain can I absorb before crossing into the next bracket or triggering the NIIT threshold? If the answer is US$30,000, and each 100-share assignment creates a US$13,500 gain, then writing two contracts per quarter keeps the annual exposure at roughly US$27,000 per year if all contracts are assigned. Adjust the number of contracts and the strike aggressiveness based on the planned annual gain budget.

Strike selection: balancing premium with assignment probability

On low-basis stock, the strike selection shifts toward farther OTM to reduce assignment probability. A 0.15 to 0.20 delta call has roughly an 80 to 85 percent probability of expiring worthless, meaning the stock is kept and the premium is retained as income without triggering a taxable event. The tradeoff is that far OTM calls pay less premium.

An alternative approach is to use ITM calls as a deliberate exit tool. If you have decided to sell 200 shares this year, selling ITM calls with high deltas makes the sale almost certain through assignment. You collect a larger premium than a market sale would provide (the call includes extrinsic value on top of the intrinsic component), and the assignment happens at a known date and price. This is covered call assignment as a planned tax event, not a risk to avoid.

Constructive sale risk and the qualified covered call boundary

Deep ITM calls on appreciated stock can trigger the constructive sale rule under Section 1259. If the call effectively eliminates substantially all risk and reward of stock ownership, the IRS treats the trade date as a sale at fair market value, forcing immediate gain recognition. The qualified covered call exception under Section 1259(d)(1) protects writers who stay within the parameters of Section 1092(c)(4).

For low-basis stock, this rule is especially punishing because the entire embedded gain would be recognized on the date the call is written, potentially in an unplanned tax year. A US$15-basis stock with a US$150 market price and a US$60 deep ITM call would almost certainly fail the qualified test and trigger a constructive sale of the US$135 per-share gain. Stay well within the qualified parameters, and if you are uncertain, consult a tax professional before writing the call.

Alternatives to covered calls on low-basis stock

Each alternative has its own complexity, costs, and requirements. Covered calls are the most accessible tool for retail investors but are not always the most tax-efficient. The decision should be made in the context of the full estate plan, not just the option premium. For positions with more than US$500,000 of embedded gain, the planning cost of a tax advisor is usually small relative to the tax at stake.

• Hold until death for stepped-up basis (eliminates capital gains tax entirely for heirs under current law).
• Donate to a qualified charity for a fair-market-value deduction without recognizing the gain.
• Contribute to a charitable remainder trust for partial income and partial charitable deduction.
• Exchange into a diversified exchange fund (limited availability, partnership structure, seven-year holding requirement).
• Sell in small lots over many years without options, spreading the gain across tax years.